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Canonical equilibrium distribution derived from Helmholtz potential

Oikonomou, Thomas; Baris Bagci, G.; Tirnakli, Ugur - In: Physica A: Statistical Mechanics and its Applications 391 (2012) 24, pp. 6386-6389

Plastino and Curado [A. Plastino, E.M.F. Curado, Phys. Rev. E 72 (2005) 047103] recently determined the equilibrium probability distribution for the canonical ensemble using only phenomenological thermodynamical laws as an alternative to the entropy maximization procedure of Jaynes. In the...

Persistent link: https://www.econbiz.de/10011058266

Random-walk diffusion and drying of porous materials

Mehrafarin, M.; Faghihi, M. - In: Physica A: Statistical Mechanics and its Applications 301 (2001) 1, pp. 163-168

Based on random-walk diffusion, a microscopic model for drying is proposed to explain the characteristic features of the drying-rate curve of porous materials. The constant drying-rate period is considered as a normal diffusion process. The transition to the falling-rate regime is attributed to...

Persistent link: https://www.econbiz.de/10010591054

Experimental investigation of gas percolation through porous compressible material under the effect of shock wave

Lagutov, Y.P.; Gvozdeva, L.G.; Sharov, Y.L.; Sherbak, N.B. - In: Physica A: Statistical Mechanics and its Applications 241 (1997) 1, pp. 111-117

The results of investigations of the shock wave interaction with compressible polyurethane foam in a shock tube by a special optical method of visualization of transparent as well as nontransparent non-uniformities are presented simultaneously. It is shown that the trailing edge of the...

Persistent link: https://www.econbiz.de/10010586666

Sorption heat engines: Simple inanimate negative entropy generators

Muller, Anthonie W.J.; Schulze-Makuch, Dirk - In: Physica A: Statistical Mechanics and its Applications 362 (2006) 2, pp. 369-381

cycling and work on alternating adsorption and desorption. These generators are not in general explicitly recognized as heat …

Persistent link: https://www.econbiz.de/10010874681

Lattice–Boltzmann simulations of dynamic interfacial tension due to soluble amphiphilic surfactant

Skartlien, R.; Furtado, K.; Sollum, E.; Meakin, P.; … - In: Physica A: Statistical Mechanics and its Applications 390 (2011) 12, pp. 2291-2302

. In the current system, the surfactant adsorption kinetics is diffusion dominated and the interface separates two …, with oil soluble surfactant. We demonstrate how to adapt and calibrate the model to capture the adsorption timescale of the …

Persistent link: https://www.econbiz.de/10010874847

Kinetic models of self-organization effects in lattice systems

Dubrovskii, V.G.; Cirlin, G.E.; Bauman, D.A.; Kozachek, V.V. - In: Physica A: Statistical Mechanics and its Applications 260 (1998) 3, pp. 349-373

A non-linear model for time-dependent occupation of lattice gas sites is studied. A self-consistent approximation for the diffusion operator is proposed and studied in discrete and continual forms. It is shown that self-organization effects in the spinodal region lead to a spontaneous...

Persistent link: https://www.econbiz.de/10010871627

Reversible adsorption on a random site surface

Oleyar, C.; Talbot, J. - In: Physica A: Statistical Mechanics and its Applications 376 (2007) C, pp. 27-37

We examine the reversible adsorption of hard spheres on a random site surface in which the adsorption sites are … is at least one diameter away. We use a numerical method to obtain the adsorption isotherm, i.e. the number of adsorbed … exactly in the limits of low and high site density. An approximate theory for the adsorption isotherms, valid at low site …

Persistent link: https://www.econbiz.de/10010871847

Anomalous transport in activated carbon porous samples: power-law trapping-time distributions

Drazer, G; Rosen, M; Zanette, D.H - In: Physica A: Statistical Mechanics and its Applications 283 (2000) 1, pp. 181-186

a continuous-time random-walk approach, establishing a relation between the waiting time distribution and the adsorption …

Persistent link: https://www.econbiz.de/10010872218

Phase behavior and fluid–solid surface tension of argon in slit pores and carbon nanotubes

Hamada, Yoshinobu; Koga, Kenichiro; Tanaka, Hideki - In: Physica A: Statistical Mechanics and its Applications 388 (2009) 12, pp. 2289-2298

. Effects of the pore size on pressure–tensor components, the fluid–wall surface tension, and the adsorption are also compared …-well depth of the fluid-pore interaction, and the adsorption isotherms overlap each other almost completely for narrow pores and …

Persistent link: https://www.econbiz.de/10010872510

Adsorption of a spherical nanoparticle in polymer brushes: Brownian dynamics investigation

Zhang, Qiyi; Xiang, Xun - In: Physica A: Statistical Mechanics and its Applications 392 (2013) 18, pp. 3857-3862

We use Brownian dynamics simulations to study the adsorption behavior of a nanosized particle in polymer brushes. The … adsorption process, the dynamic behavior of the nanoparticle in the brush, the penetration depth, the diffusion coefficient of …

Persistent link: https://www.econbiz.de/10010679207